Updated annotation (from data): Nitrate-binding regulatory protein (nasS) Rationale: This protein is specifically important for the utilization of nitrate as a nitrogen source, but this may be a polar effect. It is74% identical to the nasS/PA1786 protein from P. aeruginosa (PMID:22493305) and to nasS from Azotobacter vinelandii (PMID:8748040), which binds nitrate and suppresses the activity of the transcriptional activator nasT. It is also more distantly related to the periplasmic substrate-binding components of nitrate ABC transporters (i.e., 37% identity to the N terminal part of ntrC/sll1452 and 36% identity to ntrA/sll1450), hence the misannotation as a transporter. Original annotation: nitrate transporter Type 1: Protein-coding gene Located on scaffold CP007637, + strand, nucleotides 4,559,755 to 4,560,981 See nucleotide sequence around PS417_20960 or for all of scaffold CP007637